Backpack



FIG. 1 is a front perspective view of a backpack in a closed and buckled position;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a side elevational view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.

The evenly dashed broken lines shown in the drawings form no part of the claim and are for illustrating portions of the backpack.

The dash dot dash lines shown in the drawings identify the boundaries of the claimed surfaces. 

CLAIM The ornamental design for a backpack, as shown and described. 